Moon

How long does it take to travel to the moon?

3 days

Diameter of the Earth

About 8000 miles

How did the astronauts on the moon deal with the daytime heat and night time cold?

The astronauts had water cooling systems to moderate the extreme heat of the day, and they did not explore at night.

Diameter of Moon/Earth

The diameter of the moon is about 1/4 the diameter of the earth.

Unique about the moon's size compared to those of other planets?

The earth's moon is extremely large when compared to the size of its planet. (About 10 times larger than other comparisons.)

Impact Theory

The Earth was hit by a smaller planet and the moon was formed by the resulting debris (pieces).

Romans called our moon?

Luna

Maria

Maria are dark areas of the moon covered with hardened lava.

Hunter's Moon

The second full moon of the fall is called the hunter's moon.

The Co-Accretion Theory

states that the moon and the earth were formed at about the same time from the same material.

A spacesuit does not protect against what when on the moon?

micro meteorites

Difference between a solar eclipse and a partial solar eclipse?

A total solar eclipse blocks all of the sun's light to a part of the earth. A partial solar eclipse blocks out only part of the sun.

Diameter of Moon

About 2000 miles Less than the width of the United States

How would the terminator appear if the moon had an atmosphere?

If the moon had an atmosphere, the terminator would have a gradual change from light to dark (not a sudden change).

What do scientists think caused the "low wall" craters on the moon?

Low wall craters were probably caused by volcanic processes.

What caused Marias?

Marias were formed from asteroid or comet impacts which left holes that filled with lava.

Rills

Rills are long narrow valleys on the moon.

What may rills have been paths for?

Rills may have been paths for lava that covered marias.

What theory of the moon does the video support?

The Impact Theory

Why if you were to talk on the moon, you could not be heard?

There is no atmosphere.

Lunar Eclipse

When the earth blocks the sun's light to the moon.

Solar Eclipse

When the sun's light is blocked from a part of the earth by the moon.

Diameter of the moon

It is about the width of the United States (slightly less).

What does "Maria" mean?

Seas

Harvest Moon

The first full moon of the fall is called the harvest moon.

How many moons are there in our solar system?

150

Distance from the Earth to the Moon in miles?

234,000 miles

Maximum and minimum temperatures on the moon?

270 degrees F and 240 degrees F

Capture Theory

At one time the moon was an independent planet orbiting the sun.

The moon has almost no atmosphere

Because the escape velocity to leave the moon is not very great, so gases can leave the moon fairly easily.

What does the sky look like on the moon?

Black, because there is no atmosphere to scatter the light.

What purpose did God create the Moon?

God created the moon to be the lesser light to rule the night, also for seasons, days, and years

Occulting Star/Moon's atmosphere

If the moon had an atmosphere the star would twinkle before it was blocked out be the moon.

If the moon had an atmosphere, how would the day and night temperatures differ?

If the moon had an atmosphere, the extreme heat of the day and the extreme cold of the night would not be as severe.

Escape Velocity

Is the minimum speed an object must have to free itself from gravitational pull.

What does the moon do to the climate of our earth?

It stabilizes it.

From the earth, how long does it take the moon to make one orbital period?

It takes the moon 29 1/2 days to make one orbit when viewed from the earth.

Which planet has the most moons and how many?

Jupiter, 62

What caused the dust layer on the moon?

Meteorites hitting the surface.

What did the astronauts leave on the moon so that we could measure the distance from the earth to the moon over time?

Mirrors

Causes of craters on the moon?

Most craters on the moon were caused by impacts from meteoroids.

Is the composition of the Earth and moon the same?

No - the earth has a large iron core.

Would a spacecraft need as much fuel to escape the earth as the moon?

No, the escape velocity to leave the earth is much greater than to leave the moon, so it would take less fuel to leave the moon.

Which theory does our book support?

None

Force of gravity of the Moon vs Earth

The force of gravity on the surface of the moon is only about 1/6 that of the gravity of the surface of the earth.

When does a full moon rise and set compared to the sun's rise and set?

The full moon rises at about the same time the sun sets. The full moon sets at about the same time the sun rises.

Escape velocity depends on

The mass of the body from which the object is escaping.

Why before space travel we could not see the backside of the moon?

The moon always keeps one side towards the earth.

(Co)Accretion Theory

The moon and Earth were both formed from the same cloud of gas and dust.

What phase must the moon be in to be in a lunar eclipse?

The moon must be in the full moon phase in a lunar eclipse.

What phase must the moon be in to produce a solar eclipse?

The moon must be in the new moon phase in a solar eclipse.

Two motions of the moon

The moon revolves around the Earth. The moon rotates on its own axis.

Fission Theory

The moon was spun off from the earth while the earth was forming.

What causes our ocean tides?

The moon's gravitational pull.

How stable is the moon's orbit?

The moon's orbit is extremely stable (it has moved less than the length of two football fields over 3000 years.

Moon's shape

The moon's shape is nearly spherical because it does not spin (rotate) very fast.

"New Moon" appear to us.

The new moon is nearly impossible to see. (None of it is lighted and it appears in the daytime.)

Two things that are slowly happening to the moon's orbit.

The orbit is getting slightly bigger each year. The orbit is becoming more circular (round).

Shape of the moon's orbit?

The shape of the moon's orbit is an ellipse. (Very close to being a circle.)

Streaks that sometimes radiate out of a crater?

The streaks that sometimes radiate from craters are called rays. They are the brighter material floating out of the crater.

Greek word for "crater"?

The term crater comes from the Greek word for "cup".

Terminator

The terminator is the line dividing the light side of the moon from the dark side.

Moon Phases - need to know

Waxing crescent, first quarter, waxing gibbous, full, waning gibbous, last quarter, waning crescent